Out of 17 Ratings

Owner's of the AT&T Conference Phone ATT993 gave it a score of 3.8 out of 5. Here's how the scores stacked up:
  • Reliability

    3.82 out of 5
  • Durability

    3.81 out of 5
  • Maintenance

    3.88 out of 5
  • Performance

    3.76 out of 5
  • Ease of Use

    3.56 out of 5
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Getting started
Optional headset
Make sure the headset is firmly plugged into the headset jack under the
rubber flap on the right side of the telephone. There is an error tone if you
press HEADSET when the headset is not plugged in.
For hands-free telephone conversations, use any industry standard 2.5 mm
headset (purchased separately). For best results, use an AT&T 2.5 mm headset.
To order an AT&T 2.5 mm headset, visit our website at
www.telephones.att.com or call 1 (800) 222-3111. In Canada, dial
1 (866) 288-4268.
NOTE: If the sound quality of the headset is poor, try unplugging it, and firmly plugging it in
Plug 2.5mm headset into
the jack on the side of the
telephone base (beneath
the small rubber flap).